add cloud function back

functions/src/index.ts

@@ -2,6 +2,7 @@ export { notifyUpcomingEvents, sendNotificationOfficeHours, sendNotificationMemb
 export { updateUserPoints, updateAllUserPoints, scheduledUpdateAllPoints } from "./pointSheet";
 export { updateCommitteeCount, scheduleCommitteeCount } from "./committees";
 // export { resetOfficeScheduler } from "./officeReset";
+export { isUserInBlacklist } from "./restriction";
 export { resetOfficeOnCall } from "./officeReset";
 export { zipResume } from "./resume";
 export { updateUserRole } from "./roles";

functions/src/restriction.ts

@@ -0,0 +1,27 @@
+import * as functions from 'firebase-functions';
+import { db } from "./firebaseConfig";
+
+
+export const isUserInBlacklist = functions.https.onCall(async (data, context) => {
+    const uid = data.uid;
+    if (!uid) {
+        throw new functions.https.HttpsError('invalid-argument', 'The function must be called with one argument "uid".');
+    }
+    console.log(`Checking if user ${uid} is in the blacklist...`);
+
+    try {
+        const blacklistDocRef = db.doc("restrictions/blacklist");
+        const docSnap = await blacklistDocRef.get();
+
+        // Check if the document exists and has data
+        if (docSnap.exists && docSnap.data()) {
+            const blacklist = docSnap.data()?.list;
+            return { isInBlacklist: Array.isArray(blacklist) && blacklist.some(user => user.uid === uid) };
+        } else {
+            // Blacklist document does not exist or has no data
+            return { isInBlacklist: false };
+        }
+    } catch (error) {
+        throw new functions.https.HttpsError('unknown', 'An error occurred while checking the blacklist', error);
+    }
+});